CVE-2026-111269

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Source
https://cve.org/CVERecord?id=CVE-2026-111269
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111269.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-111269
Downstream
AZL (1)
BELL (1)
DEBIAN (1)
MGASA (1)
OESA (4)
UBUNTU (1)
Published
2026-10-15T21:43:16Z
Modified
2026-10-28T10:51:19Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
libical through 4.0.6 Heap Out-of-Bounds Read via icalvalue_decode_ical_string
Details

libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111269.json"
}
References

Affected packages

Git / github.com/libical/libical

Affected ranges

Type
GIT
Repo
https://github.com/libical/libical
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
d753885ce2de7c105d6b8c405aa7aee1d98ad8de
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "last_affected": "4.0.6"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "fixed": "d753885ce2de7c105d6b8c405aa7aee1d98ad8de"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

Other
cyruslibs-fastmail-v59
cyruslibs-fastmail-v60
cyruslibs-fastmail-v61
v1.*
v1.0.1
v2.*
v2.0.0
v3.*
v3.0.0
v3.0.1
v4.*
v4.0.0
v4.0.1
v4.0.2
v4.0.3
v4.0.4
v4.0.5
v4.0.6

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111269.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "function_hash": "316778497619742348004970019956608662095",
            "length": 2198
        },
        "id": "CVE-2026-111269-4061754e",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/libical/libical/commit/d753885ce2de7c105d6b8c405aa7aee1d98ad8de",
        "target": {
            "file": "src/test/regression.c",
            "function": "test_langbind"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "60157438235943672153280174772935789149",
            "length": 1917
        },
        "id": "CVE-2026-111269-50e7d454",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/libical/libical/commit/d753885ce2de7c105d6b8c405aa7aee1d98ad8de",
        "target": {
            "file": "src/libical/icallangbind_p.c",
            "function": "icallangbind_property_eval_string_r"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "299576086814024661986272937289312502461",
                "67085515585864697254863557434829801543",
                "224711272777936434225885217758330190270",
                "336933636401570343684817877917235155041"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-111269-545519fd",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/libical/libical/commit/d753885ce2de7c105d6b8c405aa7aee1d98ad8de",
        "target": {
            "file": "src/libical/icalvalue.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "285727948635254624156380453937593874101",
            "length": 721
        },
        "id": "CVE-2026-111269-6455a763",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/libical/libical/commit/d753885ce2de7c105d6b8c405aa7aee1d98ad8de",
        "target": {
            "file": "src/libical/icalvalue.c",
            "function": "icalvalue_decode_ical_string"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "100930578669091930229152300447292817543",
                "137128335902045412070465613425593333389",
                "24943240847259435886964923505724496320",
                "199544996642927700170968649578093221755",
                "152975061652093419897934441807623495521",
                "306632388105238196138645977028913594778",
                "320226039016554888648188444519292111603",
                "200688474584828321559485032927115507327"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-111269-b5ad72c8",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/libical/libical/commit/d753885ce2de7c105d6b8c405aa7aee1d98ad8de",
        "target": {
            "file": "src/test/regression.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "187377074548837185571055174777469411477",
                "201430193538699053690493918977545346557",
                "164558805649560494978061491298831648249",
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                "55546434536660094534018381607244789307",
                "285276960112816122459942278271479200290"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-111269-ce5bf098",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/libical/libical/commit/d753885ce2de7c105d6b8c405aa7aee1d98ad8de",
        "target": {
            "file": "src/libical/icallangbind_p.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "204154375418713912855946014648200554108",
            "length": 1805
        },
        "id": "CVE-2026-111269-d29d6733",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/libical/libical/commit/d753885ce2de7c105d6b8c405aa7aee1d98ad8de",
        "target": {
            "file": "src/test/regression.c",
            "function": "test_icalvalue_decode_ical_string"
        }
    }
]
vanir_signatures_modified 
"2026-10-28T10:51:19Z"